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#4753127 - 05/10/18 02:55 PM GL4 and/or GL5
NICAT Offline


Registered: 04/05/18
Posts: 45
Loc: Azerbaijan
Hi.
Car's has GM (Opel) F16 5 speed synchronized manual gearbox.
Since it is quite an old gearbox, i couldn't find any official information about the correct fluid type.
But many says it should be 75w-90 GL-4.
My friend is Motul's dealer here. And on the bottles of gearbox oil, i have seen API STANDARDS as API GL-4/GL-5
This is a little confusing. I coudln't find any Motul product with GL-4 API Standart alone.
If GL-4 and GL-5 is something different, how an oil can meet both standarts ?
So is it just something like All-Season Tires? (Which is not the best for summer and not the best for winter. But can be used in any season)
Should i buy prefer GL-4 over GL4/GL5?
Regards

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#4753134 - 05/10/18 03:04 PM Re: GL4 and/or GL5 [Re: NICAT]
Marco620 Online   happy


Registered: 02/25/14
Posts: 2096
Loc: Deplorable in Kansas, HK fan b...
Try redline mtl or mt90
_________________________
2015 Civic (R18Z1) 157k mi.0w20 Redline/Archoil,HPS SRI,87e0/Moog links Borla Exhaust/Vibrant Resonator/Tein Suspension
Go Nashville Predators!

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#4753136 - 05/10/18 03:05 PM Re: GL4 and/or GL5 [Re: NICAT]
Marco620 Online   happy


Registered: 02/25/14
Posts: 2096
Loc: Deplorable in Kansas, HK fan b...
Front wheel drive and synched...GL4! : )
_________________________
2015 Civic (R18Z1) 157k mi.0w20 Redline/Archoil,HPS SRI,87e0/Moog links Borla Exhaust/Vibrant Resonator/Tein Suspension
Go Nashville Predators!

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#4753209 - 05/10/18 04:45 PM Re: GL4 and/or GL5 [Re: NICAT]
SargeBB Offline


Registered: 06/24/08
Posts: 166
Loc: Texas
I would not use the GL4/Gl5 combination. Both Amsoil & Redline (and a few others) produce a GL4 gear oil without the GL5 added on. That's what I'd use for manual transmission...and I believe of the 2 aforementioned products, you'll find most people use the Redline MT90, which is SAE 75W-90.

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#4753250 - 05/10/18 05:36 PM Re: GL4 and/or GL5 [Re: NICAT]
Rand Offline


Registered: 08/20/03
Posts: 12601
Loc: NE,Ohio
unless you need a GL-5 for your application (such as Subaru or Porsche)

I would skip dual rated gear oil and get a GL-4 only.

Redline has several options available in gl-4 with different viscosity.
_________________________
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#4753262 - 05/10/18 05:44 PM Re: GL4 and/or GL5 [Re: NICAT]
mattwithcats Offline


Registered: 06/13/13
Posts: 1648
Loc: Virginia
I am giving Mobil 1 Delvac 50 a try in my GL-4 rated manual tranny...

https://www.mobil.com/English-US/Commerc...ission-Fluid-50
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#4753273 - 05/10/18 05:59 PM Re: GL4 and/or GL5 [Re: NICAT]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18059
Loc: Dallas,Tx USA
Redline MT-90
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1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
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#4753284 - 05/10/18 06:10 PM Re: GL4 and/or GL5 [Re: NICAT]
slacktide_bitog Online   content


Registered: 03/20/08
Posts: 6004
Loc: USA
Liqui Moly #20012

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#4753322 - 05/10/18 06:44 PM Re: GL4 and/or GL5 [Re: NICAT]
zeng Offline


Registered: 09/01/15
Posts: 2147
Loc: Malaysia
Motul GL4/GL5 would work well, if not better in components longevity.

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#4753353 - 05/10/18 07:09 PM Re: GL4 and/or GL5 [Re: NICAT]
NICAT Offline


Registered: 04/05/18
Posts: 45
Loc: Azerbaijan
Thanks for replies.
In my country, unfortunately there are German and Russian oil brands.(Except Motul)
Liqui Moly #20012 is also specified as GL4+ (GL4/GL5)


Edited by NICAT (05/10/18 07:12 PM)

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#4753475 - 05/10/18 08:41 PM Re: GL4 and/or GL5 [Re: NICAT]
Popsy Offline


Registered: 05/10/15
Posts: 870
Loc: Frogland / Brittany
Motul Motylgear 75W90 will probably do the job. Or Castol Syntrans Multivehicle..or even Castrol Syntrans Transaxle. My favorite is the last one, it's a GL4+ but it should do ok in your GL4 application.
_________________________
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#4753588 - 05/10/18 10:27 PM Re: GL4 and/or GL5 [Re: NICAT]
dailydriver Offline


Registered: 03/14/06
Posts: 9155
Loc: Pennsylbammyvania
Originally Posted By: NICAT
Thanks for replies.
In my country, unfortunately there are German and Russian oil brands.(Except Motul)
Liqui Moly #20012 is also specified as GL4+ (GL4/GL5)


Ravenol makes a few GL-4 ONLY manual gearbox/transaxle fluids, and I'm guessing that you CANNOT get the Red Line everyone on here is suggesting, there, correct?

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#4753634 - 05/10/18 11:37 PM Re: GL4 and/or GL5 [Re: dailydriver]
NICAT Offline


Registered: 04/05/18
Posts: 45
Loc: Azerbaijan
Originally Posted By: dailydriver
Originally Posted By: NICAT
Thanks for replies.
In my country, unfortunately there are German and Russian oil brands.(Except Motul)
Liqui Moly #20012 is also specified as GL4+ (GL4/GL5)


Ravenol makes a few GL-4 ONLY manual gearbox/transaxle fluids, and I'm guessing that you CANNOT get the Red Line everyone on here is suggesting, there, correct?


No unfortunately.
But we have ravenol here.
Anyway, there are Russian giants Lukoil and Gazpromneft fluids which have GL4 Only fluids. But they are Semi-synthetic. Not Fully synthetic oils.

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#4753741 - 05/11/18 05:24 AM Re: GL4 and/or GL5 [Re: NICAT]
NH73 Offline


Registered: 10/31/14
Posts: 682
Loc: Pa, USA
Doesn't GL-5 supersede GL-4?

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#4753767 - 05/11/18 06:11 AM Re: GL4 and/or GL5 [Re: NH73]
zeng Offline


Registered: 09/01/15
Posts: 2147
Loc: Malaysia
I consider GL5 exceeds GL4 , other than (possible lack) of dedicated manual trans FM, which isn't part of GL4 (now obsolete) specifications anyway.
This so called dedicated FM package in GL4 behaves unpredictably in use, and behaves inconsistently in differing manual trans.

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